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INAA Applied to Halogen (Br and I) Stability in Long-Term Storage of Lyophilized Biological Materials

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Abstract

Instrumental neutron activation analysis (INAA) was used to determine the Br and I concentration in the same ten lyophilized and homogenized human thyroid samples prior and after a 20-year storage at room temperature. It was found that long-term storage had no effect on the iodine content. At the same time, the bromine content was about 2-fold lower (p<0.01). It was assumed that possible losses of other halogens can occur under long-term storage of lyophilized biological materials at room temperature.

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Zaichick, V., Zaichick, S. INAA Applied to Halogen (Br and I) Stability in Long-Term Storage of Lyophilized Biological Materials. Journal of Radioanalytical and Nuclear Chemistry 244, 279–281 (2000). https://doi.org/10.1023/A:1006734114204

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